Ajssignob



B. HARRIS.

MOTOR METER.

APPLlCATlON HLED FEB. 2. 1920.

Patented J une 7, 1921.

2 SHEETS-SHEET I JNVENTOR.

j (far/0a My W ATTORIIV-EY.

- B. HARRIS.

MOTOR METER.

APPLICATION FILED ma. 2. 1920.

1,380,955. Patnted June 7, 1921.

2 SHEETS-SHEET 2- INVENTOR.

WI TNESS:

i f m T BY A 'ITORNEYY UNITED STATES PATENT OFFICE.

BENJAMIN HARRIS. or EAST AKRON. onto. AssIoNoR OF'TWENTY-FOUR PER GENT. T0 MICHAEL LUBIE AND TWENTY-FIVE PER CENT. T0 EDWARD LURIE.

moronkmn'rna.

Be it known that l'lirzxaanixllamas, a citizen of the l'nited' States, residing at East .\l\'|'ou. in the county of Summit, and State of Ohio. have invented new and useful lmproven'ieuts in Motor-Meters, of which the following is a specification.

This invention relates to motor meters. which embodies among other features a 1'0- tatah'le element having indieia relative to the temm-rature ol' the motor. thermostatic means being employed for rotating the element to present the indieia to view.

Another important ohjeet of the invention resides in the provision oi a valve controlled exhaust port which is automatically nneoiered when the rotatable reaches apredetermined point to permit oi the exhaust ot' stcam from then'adiator.

The nature and advantages of t-he'invention will be. better understood when the following detailed description is read iu connection with the accompanying drawings the invention residing in the co'nstruction, eond'nmit'ion and :n'raugemeut.ot' parts as claimed.

in the drawings .i'ormiug part of the specification like numerals of reference indicate similar parts in the several views and wherein Figure 1 is a view in elevation of the meter eo'nstrlu-ted in accordance with my invention.

i u n l 0 Fig. 2 is a vertical sectional view there through.

Fig. i-l is a horizontal sectional view.

Fig. 4 is a detail view oi the rotatable elementt Fig. 5. is a vertical sectional view taken through a modified form of-the invention.

Fig. (3 is ahorizontal sectional View therethrough.

Fig. -7is' a detail View of a modified form of valve-for the exhaust pipe.

7 Referring to the drawings, in detail, 10 indicates a radiator cap, of usual construction provided with a central opening to receive a reduced portion 11 of a receptacle havrn an enlarged upper portion 12, preferably 0 spherical formation to receive the rotatable element 13. Theelement in the" preferred form o t-the invention is in the nature of a drum which is secured upon a vertically disposed shaft 14 having its op osite end journaled in bearings 15." The rum 13 is open Specification of Letters Patent.

element Patented June '7, 1921.

Application filed February 2, 1920. Serial No. 355,613..

at both ends, and provided with horizontally with vertically disposed rows of letters 17,

which are stamped from the material'form ing the drum, these letters being arr-an ed in any combination to ronvey information as to the temperature of the motor. The upper part of the receptacle, or casing 12 is provided with a sight opening 18 of an eloIigated nature, and of such size that but one" row of letters can be presented to view on time.

tacle or casing 12 and passing through drum 13 is a radiant tube 19. This tube is disposed adjacent the sight opening 18 to illuminate the particular row of letters pre sented to view at night time. If desired, :1

Depending from the top of the race? reflector 20 can be supported by the tube in made out of suitable material, to be' efl'eotd,

by heat, andexpand and contract witha variance of temperature. The springs are ter-' minally connected to the shaft 14 and to the adjacent parts'of the casing 11 and obviously impart rotation to the shaft 14 upon the contraction and ex aansion of the same. Tubes 22am passedt irough the lower portion of the receptacle over the springs 21, heat or water circulating through these titties and confining the springs 21' in a place inwhich they will be affected by the temperature of the water in the radiator. The row of letters'indicated at 23 on the rotatable element 13, is covered with a red glass to indicate danger, and when this row of letters is presented to view through the sight opening 18, the steam in the radiator is automatically exhausted in a manner to be. presently described.

Forthis purpose the lower portion 11 of the casing or receptacle is rovidc l with an exhaust port 24 normally c osed by means of a valve 25. The w lve has a tail portion pro ecting within the receptacle. and in the pat of movement of a finger, 26 radiatingfrom the shaft 14. p

The construction and a rangement of parts is such, that when the rotatable element 13 is actuated to present the row 23 of letters to view throu h the opening 18; indieating danger the finger 2]? assumes a position to engage the tail portion of the valve, thereby opening the latter to exhaust the steam from the radiator through the pipe 27. The pipe 27 communicates with the port 24 and opens at its opposite end to the atmosphere through the -top of the receptacle 12. In the modified form of the invention the springs,or in other wm-ds the thermostatic devices 30, are associated with a horizontally disposed shaft 31 journaled in the lower portion of thereceptacle 32. The shaft'31 is provided witha crank 33 which is eonnected'by one end of an operating shaft 34. The op )osite end of. the shaft 34 is eonneeted to t e crank portion 35 of a horizontally disposed shaft 36, journaled in suitable bearings 37 carried by the receptacle 32. -A disk 38 is carried by each end 36 -f0r rotation therewith, and each disk is provided with aplurality of radially disposed rows of letters which are preferably stamped from the disk, the letters being combined to convey certain information relative to the temperature of the motor. In other words, the disks 3S are utilized for the same purpose as the element 13 hereinabov'e described in connection with the preferred form of the invention. The radiant tube 39 depends from the top of the re 'eeptacle 32 and is positioned between the disks 38, so that the indieia thereon can be readily viewed at night. Both the front and back of the casing 32 is provided with an elongated sight opening 40, so thatthe meter can be read from either the front or bask of the same. It is of course understood each disk 38 carries the same indi'cia arranged in the samermanner. When the :thennostatie devices 30 are expanded or contraeted by the variation of temperature, the shaft 3l 'is rotated obviously imparting a similar movement to the shaft 36 through the instrumentality of the connecting rod 34. In this manner the disks 38 are rotated I to present to, view through the sight openings 40 information relative to the temperature of the motor. This form of the invention is the sameas that described in connection with the preferred form of the invention.

valve of the exhaust pipe which is here in- In Fig. 7 1' have disclosed a modified forin'of valve' or in other words a modified form of mechanism for controlling the dicated at 45. Arranged within this pipe is a butterfly valve 46H! axis 47 of which is terminally connected with a right angularly shaped arm at the point of juncture between the branches 48' and 49 thereof. Each of these branches has its extremity offset, the said extremities being arranged in parallelism and each being provided with a roller 50. Carried b the reciproeatin shaft 3 1 is a substantiaily U-shaped mem er 51 the latter being equipped with a roller 52 adapted to alternately engage the roller 50 of the right angularly shaped arm in order to eon trol the movements of the valve 46. The roller 52 operates between the rollers 11),

and when brought into engagement with one of the rollers, upon movement of the shaft 34 in one direction, it operates the valve 46 to open the latter. Upon reverse movement of the shaft 34, the roller 52 is brought into.engagement with the other roller 50 which now assumes an uppermost position, so as to close the valve 46 as will be readily understood.

While it is believed that from the foregoing description, the nature and advantages of the invention will be readily apparent, I desire to have it understood that I do not limit myself in this connection and that such changes may be resorted to when desired as fall within the scope of what is claimed.

Having thus described my invention I claim 1. A motor meter comprising a casing having a sight opening, a rotatable element ar thereon, thermostatic means for rotatingsaid element, said casing having a steam exhaust port, a pipe arranged within the easing and leading from said port to the atmosphere, a valve normally closing said port, andhneans. controlled by said element for automatically operating said valve to uncover the port when said element reaches a predetermined position.

3. A motor meter comprising a casingbaving a sight opening, a rotatable element arranged within the casing and having indicia thereon adapted to register with said opening, thermostatic means for rotating said element, said casing having a steam exhaust port, a pipe arran ed within the easingand leading from sai port to the atmosphere, avalve normally closing said port, 

